289393894 has 4 divisors (see below), whose sum is σ = 434090844. Its totient is φ = 144696946.

The previous prime is 289393831. The next prime is 289393931. The reversal of 289393894 is 498393982.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72348472 + ... + 72348475.

It is an arithmetic number, because the mean of its divisors is an integer number (108522711).

Almost surely, 2^289393894 is an apocalyptic number.

289393894 is a deficient number, since it is larger than the sum of its proper divisors (144696950).

289393894 is a wasteful number, since it uses less digits than its factorization.

289393894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144696949.

The product of its digits is 3359232, while the sum is 55.

The square root of 289393894 is about 17011.5811728363. The cubic root of 289393894 is about 661.4491375555.

The spelling of 289393894 in words is "two hundred eighty-nine million, three hundred ninety-three thousand, eight hundred ninety-four".